Connective Tissue

37 cards

connective ti ssue﷯﷯﷯


 
  
Created Feb 9, 2012
by
mareks91

 

 
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1
What is the main function of connective tissue?
 
primarily used for support
2
What are the three types of connective tissue?
 

fibroconnective

cartilage

bone

3
What is fibroconnective tissue mainly composed of?
 
matrix mainly composed of fibers
4
What are the 6 types of fibroconnective tissue?
 

reticular

areolar

elastic

dense regular

dense irregular

adipose

5
What is areolar tissue?
 

-loose connective tissue- packing material holds organs in place

-most common connective...

6
What is areolar tissue composed of?
 

fibers in extracellular matrix are collagen and elastin

-extracellular matrix is...

7
What is reticular tissue?
 

-form an internal skeleton for lymph, bone marrow, fat, spleen

 

8
What is reticular tissue composed of?
 
elastin and collagen
9
What is adipose tissue?
 

-highly vsacular insulator

-shock absorber

-energy store

10
What is adipose tissue composed of?
 

-cells account for 90% of tissue mass

-little matrix present

11
What is dense regular tissue and what is it composed of?
 

closely packed parallel collagen fibers

-few cells

12
Where are dense regular tissues located? 
 

-found where tension is exerted in a particular direction

-tendons and ligaments

13
What is dense irregular tissue and what is it composed of?
 

-closely packed non-directional collagen

-few cells

14
Where are dense irregular tissued located?
 

-forms sheets where tension is exerted in many directions

-dermis of skin, muscle...

15
What is elastic fibers and what are they composed of?
 
-composed of mostly elastin fibers
16
Where would you find elastic tissue?
 

vocal cords

vertebral connective tissue

17
What is cartilage?
 
type of connective tissue that is avascular (which makes it slow to heal) and not well innervated
18
What is the composition of the cartilage matrix?
 

-ground substance: chondroitin sulfate and hyaluronic acid

-collagen (main fiber)...

19
What is the perichondrium?
 
surround tissue from which nutrients diffuse
20
What does the perichondrium do?
 

-limits cartilage thickness- nutrients must diffuse entire tissue thickness

-gives...

21
What are the three types of cartilage?
 

Hyaline

Fibrocartilage

Elastic

22
What makes up the hyaline cartilage?
 

tough and flexible

-much matrix

-few cells

-shock absorber

23
Where would you find hyaline cartilage?
 

-covers ends of long bones (articular carticale-eroded in OA)

-forms the skeleton...

24
what makes up fibrocartilage?
 

-less firm than hyaline

-more cells and fibers

-similar in strucutre to...

25
Where would you find fibrocartilage?
 

-transitional between tendon and articular hyaline cartilage

-component of joint...

26
What makes up elastic cartilage?
 
contains more elastin fibers than other tpes of cartilage
27
Where would you find elastic cartilage?
 

forms ear pinna

epiglottis

28
What is bone?
 
-a connective tissue with a matrix of mostly calcium and phosphate
29
What is 65% of bone weight?
 

calcium hydroxyapatite

   -calcium phosphate, calcium hydroxise,...

30
What is significant about the tropocollagen subunits?
 

-gives bones elasticity

-fracture resistance

-bone collagen decreases with...

31
What are other significant characteristics of bone?
 

-highly vascular and well innervated

-contains lymph channels

32
What is a function of bone?
 
-functions in mineral storeage and blood cell production
33
What regulates calcium metabolism?
 
bone remodeling (deposition-remodeling)
34
What happens if you have a decreased blood calcium levels?
 
-causes an increase in parathromone(PTH) which causes increased osteoclast activity
35
What happens if you have an increased blood calcium level?
 
-causes an increase in calcitonin, which causes an increase in osteoblast activity
36
What is red bone marrow and what does it produce?
 

contains hematopoietic tissue

-produces blood cells

37
What are the 6 influences on Bone Growth
 

HGH

levels of calcium

phosphorous

vitamin D

estrogen

testosterone

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